##Summary
Technical measures are not able to tackle sufficiently flash flood damages in urban areas. It needs an integrated set of adaptation measures, ideally in public and private areas, to decrease the damage potential significantly. There may be a need for the change of mindset towards a joint assessment of promising adaptation measures with the participation of local stakeholders and officials of different responsibilities. Besides structural measures and object protection, innovative measures for the retention, safe discharge, storage and use of heavy rainfall are identified and evaluated, allocated and approved on feasibility.